Antelope
Key Takeaway
Antelope is classified as high hazard in South Dakota. It was completed in 1939 and is 87 years old. Its primary use is irrigation. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Length | 2,050 ft |
| Dam Type | Concrete |
| Normal Storage | 0 acre-ft |
| Year Completed | 1939 (87 years old) |
| NID ID | SD00077 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
BIA
Federal Government
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High HazardFrequently Asked Questions
What is the hazard classification of Antelope?
Antelope is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Antelope?
Antelope is owned by BIA (Federal Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Antelope built?
Antelope was completed in 1939, making it 87 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Antelope?
Antelope serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
When was Antelope last inspected?
Antelope was last inspected on August 6, 2012. Inspection dates indicate when a formal review occurred, not the results of that inspection.